Mike's Workshop Manuals: Service manuals for every vehicle
Home >> GMC >> 1994 >> Forward Control 4.3 Z, Standard >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> General Servicing >> A/C System General Servicing >> System Service Valves >> Service Valve Locations

Service Valve Locations

For service valve locations, see SERVICE VALVE LOCATIONS (CARS) or SERVICE VALVE LOCATIONS (TRUCKS & VANS) table.

SERVICE VALVE LOCATIONS

Vehicle (1) High Low
"A" Body (2) (3)
"B", "F", "J", "L" & N" Bodies (4) (3)
"C", "E" & "K" Bodies (5) (3)
"D" Body (2) (3)
"H" & "W" Bodies (5) (3)
"Y" Body (6) (3)
(1) Body code is determined by fourth character of VIN code. See COMPRESSOR APPLICATIONS & BODY DESIGNATIONS tables in the A/C COMPRESSOR SERVICING article in the AIR CONDITIONING & HEAT section.
(2) In discharge line, near compressor.
(3) In line to accumulator or on accumulator.
(4) In discharge line, near condenser.
(5) In discharge line, near fender panel.
(6) In liquid line, near evaporator.
SERVICE VALVE LOCATIONS

Vehicle (4) High Low
"C" & "K" Series (5) (2)
"G", "P", "S", "T" & U" Series (5) (3)
"L" & "M" Series (1) (3)
(1) In discharge line, near compressor.
(2) In suction line, usually near accumulator.
(3) On accumulator.
(4) Series designation determined by fifth character of VIN code. See COMPRESSOR APPLICATIONS & BODY DESIGNATIONS tables in the A/C COMPRESSOR SERVICING article in the AIR CONDITIONING & HEAT section.
(5) In discharge line, near evaporator.
scientia non olet · About Mike's Workshop Manuals